Mr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8 Posted (13 years 6 months 2 weeks 4 days ago) and read 9490 times:
I have a few questions about aircraft with the ability to fold their wings.
I understand that this feature is found exclusively (I think) on aircraft that land on aircraft carriers for the purpose of allowing more space on the carrier's deck.
My main question is about fuel that remains in the folding part of the wing.
Do the pilots have to transfere or dump fuel from the folding part of the wing to other tanks due to the weight of the fuel and thus the extra strain on the hinge mechanism (which I assume is hydraulic) before the wings are folded back?
Also, what aircraft with folding wings has the longest wingspan? Could it be the E-2 Hawkeye?
Finally, how do the wing locks work on these types of aircraft? I've always wondered about this, ever since my father told me about a scenic flight he was going on as a passenger in an Avenger. He was in the Canadian Navy Reserve back in the 1950's, and as the pilot was just about to rotate off the runway at CFB Toronto (Downsview Airbase), an alarm went off in their headsets to warn them that a lock had come lose or broke. My dad said he looked at the left wing and could see it bouncing up and down, it was also starting to fold. Thank God for the ringing alarm...or they could have been killed! Plus I wouldn't be here to ask these questions!
Pacificjourney From New Zealand, joined Jul 2001, 2740 posts, RR: 7
Reply 1, posted (13 years 6 months 2 weeks 3 days 4 hours ago) and read 9369 times:
Good questions spaceman. I have no answers but actually a further question.
Some - possibly all these days - planes have their wings folded by some internal hydraulics. My question is why ?
Why bother with having some mechanism on board the plane, with it's added weight and complexity when presumably the plane will land somewhere with crew who could do the job just as well manually. Is it something to do with turn-around times or something of that nature ?
Mr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Reply 3, posted (13 years 6 months 2 weeks 2 days 1 hour ago) and read 9308 times:
Thanks for your replies.
Regarding my question about whether or not it is nessesary to remove fuel from the part of the wing that's going to be folded back, before it's folded....does anyone know if this is a required procedure or not? A question of pure curiosity.
If there is still a fully loaded fuel tank/tanks in the folded part of the wings, then the mechanisms (is that a word?) in the hinge assembly must be mighty strong....stronger than they look.
Any info about how these aircraft fold their wings would be great.
Spacepope From Vatican City, joined Dec 1999, 3309 posts, RR: 1
Reply 5, posted (13 years 6 months 2 weeks 1 day 17 hours ago) and read 9301 times:
I believe that the hinges are exceptionally strong, as I seem to remember seeing Hornets with wings folded, Sidewinders still on the launch rails. I'd suggest checking cutaway views of various aircraft to settle this once and for all. I have ones from the A-7 and F-4 around here somewhere, but can't seem to find them.
On the whole, carrier aircraft are overbuilt in general. My girlfriends father was telling me the other day about how great the F-8 crusader was, and how they once launched one off of a carrier with the wings folded. The thing managed to get airborne, circle back and land safely. Don't try that with a C-2.
J.mo From United States of America, joined Feb 2002, 669 posts, RR: 0
Reply 7, posted (13 years 6 months 1 week 6 days 21 hours ago) and read 9247 times:
As far as the largest plane with the ability to fold it's wings...Boeing 777. It was offered as an option when the plane began production. I don't know of anybody that ordered it. Anyway, back to military aircraft.
What is the difference between Fighter pilots and God? God never thought he was a fighter pilot.